function GetElementsByTags(start, tags) // argexample: ...Tags(document, ['div','ol']) { var items = []; var i = items.length; for(var ti = 0 ; ti < tags.length ; ++ti) { var a = start.getElementsByTagName(tags[ti]); for(var ai = 0 ; ai < a.length ; ++ai) items[i++] = a[ai]; } return items; } function ListsCombine(src_lists) { var all = []; var i = all.length; for(var si = 0 ; si < src_lists.length ; ++si) { var a = src_lists[si]; for(var ai = 0 ; ai < a.length ; ++ai) all[i++] = a[ai]; } return all; } function InSet(sought, items) // example: Inset('b', [ 'a', 'b', 'c' ]) { for(var i = 0 ; i < items.length ; ++i) if(sought == items[i]) return true; return false; } function GetElementByTagsAndPrune(start, tags) // example: GetElementByTagsAndPrune(document.body, [ 'ol', 'li' ] ) { var items = []; var i = items.length; for(var child = start.firstChild ; child ; child = child.nextSibling) { if(child.nodeType == Node.ELEMENT_NODE) { if(InSet(child.tagName.toLowerCase(), tags)) items[i++] = child; // don't recurse, we don't want nesteds else { var more = GetElementByTagsAndPrune(child, tags); for(var mi = 0 ; mi < more.length ; ++mi) items[i++] = more[mi]; }}} return items; } function OutlineElementIsTitle(item) { return ( (item.tagName.toLowerCase() == "h2") && (item.parentNode.tagName.toLowerCase() == "li") && (item.parentNode.firstChild == item)); } function OutlineInit() { var items = document.getElementsByTagName("h2"); for(var i = 0 ; i < items.length ; ++i) { if(OutlineElementIsTitle(items[i])) { items[i].onclick = new Function("Outline(this.parentNode)"); // might be able to add handling of 1.2.3.4 style here....(?) } } } function OutlineContract(ol_or_ul) { // lists should only contain line items, so let's get them var items = GetElementByTagsAndPrune(ol_or_ul, ["li"]); // OL for(var ii = 0 ; ii < items.length ; ++ii) { var child = items[ii].firstChild; // OL > LI if( (child.nodeType == Node.ELEMENT_NODE) && (child.tagName.toLowerCase() == "h2")) // OL > LI > H2 { child = child.nextSibling; // not to be hidden } else { ol_or_ul.style.display = "none"; // noncomformant outline } for( /*prior*/ ; child ; child = child.nextSibling) { if(child.nodeType == Node.ELEMENT_NODE) { if(InSet(child.tagName.toLowerCase(), ["ol"])) OutlineContract(child); else child.style.display = "none"; } } } } function OutlineContractAll(e) { var ols = GetElementByTagsAndPrune(document.body, ["ol", "ul"]); var ols_contracted = 0; var oi; for(oi = 0 ; oi < ols.length ; ++oi) { if( (ols[oi].nodeType == Node.ELEMENT_NODE) && (ols[oi].className == "outline")) { OutlineContract(ols[oi]); ++ols_contracted; } } if(0 == ols_contracted) // hmm, no OL/UL marked? Default to all toplevels. for(oi = 0 ; oi < ols.length ; ++oi) if(ols[oi].nodeType == Node.ELEMENT_NODE) OutlineContract(ols[oi]); } function OutlineExpandAll(e) { var divs = document.body.getElementsByTagName("*"); for(var i = 0 ; i < divs.length ; ++i) divs[i].style.display = ""; } function OutlineExpandChildren(node) { for(var child = node.firstChild ; child ; child = child.nextSibling) { if(child.nodeType == Node.ELEMENT_NODE) child.style.display = ""; OutlineExpandChildren(child); } } function Outline(node) { OutlineContractAll(document.body); OutlineExpandChildren(node); }